Support for light-projecting means



Oct. 26 1926. 1,604,194

v o. H. PIEPER z-:r A1.

SUPPORT FOR LIGHT PROJECTING MEANS Filed sept. 15. 1921 2 Smets-sheet 1 B M WWRNEY Oct'. '26 192e. 1,604,194

O. H. PIEPER ET AL SUPPORT FOR LIGHT PROJECIING MEANS Filed Sept. l5, 1921 2 Sheets-Sheet 2 VBWMM f//A TTORNEY Para@ a. 26,1926. 1,604,194

UNITED STATES PATENT OFFICE.

OSCAR H. PIEPER AND ALPHONSE F. PIEPER, OF ROCHESTER, NEW YORK.

SUPPORT FOR LIGHT-PROJECTING MEANS.

Application led September 15, 1921. Serial No. 500,982.

This invention has to do with apparatus for supporting devices for projecting light rays suoli, for example, as X-ray tubes, one object of the invention being to provide a practical apparatus of this class for securely and flexibly supporting a light source so that it may be freely and easily .adjusted by a slight eiiort of the hand thru a wide range of movement as may be found convenient in use Anotli'er'object is to provide an apparatus of this variety combining with the iiexible character of support described anadvantageous arrangement and disposition of the parts for enclosing the light source to a large degree and thus protecting the same against injury. To these and other ends the invention consists in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawings:

Figure 1 is a side elevation of an apparatus embodying the present invention.

Figure 2 is an elevation of the same as seen from the left in Figure 1.

Figure 3 is a top plan view of the same.

Figure 4 is an enlarged fragmentary section on the line la-4a of Figure 2.

Figure 5 is a section on the line 5&-5 of Figure ll.

Figure 6 is a side elevation of a modified form of a portion of the invention.

:i5 Figure 7 is a top plan view of the same,

and

Figure 8 is an elevation as seen from the left. in Figure 6.

Similar reference numerals throughout the several views indicate the same parts.

The present invention is in the nature of an improvement in apparatus such as that forming the subject matter of our co-pending applications Nos. 110,468 filed September 15, 1920, and 491,903 tiled August 13, 1921, for supporting a source of light suchV as `an X-ray tube. In the use 'of such a light source for making examinations of anatomical objects, as, for instance in dental X-ray photography, it is ,desirable to provide apparatus for securely supporting the 1i ht source or tube in a iiexible manner so t at it may be easily and conveniently `swung by hand from one position to another and adjusted inthe desired relation tothe object to be examined. To this end, as described in the said co-pending applications, there is preferably employed a supporting standard having an armed portion 10 the end of which is bifurcated to provi-de cheek bearing plates 11 between which is pivotally supported, on a bolt 12, a corresponding bearing plate 13 on a relatively movable section 14. Pivotally supported on the latter in any suitable manner for movement about, an axis substantially perpendicular to the bolt 12 is a forked section 15 having branching arms 16 the lower ends of which carry trunnions 17 on which are pivotally supported the ends 18 of an adjustable frame 19.

Frame 19 is formed centrally into a looped portion 20, preferably of the substantially hexagonal shape shown, having opposite side portions 21 lying in parallel planes and providing guideways on which the light source is .slidably adjustable. The guideways 21, as best shown in Figure 3, are preferably arcuate in shape so that as the light source is slidably adjusted along them it is also swung pivotally about a center which coincides approximately with the object to be .examine-d, such adjustment being particularly adapted for makin@ different views of a stereoscopic nature. t the ends of the guideways 2l the sides of the frame loop are curved transversely so that the end portions 18 of the frame extend along the op* posite sides of the light source presently to be described.

The guideways .21 of the frame loop are preferably formed with V shaped tracks on which slide the correspondingly formed portions of a second frame which engages and supports the light source. As shown in ure l the upper guideway has its bearing portion 22 formed separately for convenience and inserted in a recess in the guideway 21 and secured therein as by means of screws 29 24E indicating the grooved track with which cooperates a correspondingly formed part or collar 25 preferably constructed of insulating material such as phenol condensation product, rubber or similar composition. Collar 25 is formed centrally with a circular opening 26 the sides of which are curved as at 27 and faced with a sheet of yieldable material 28 such, for example, as cork. vIn the present instance collar 25 is particularly adapted for supill portion 30 and porting engagement with an `X-ray tube 29 of the so called Coolidge dental type having a generally tubular shapeiwith aspherically enlarged portion 30 interii'iedi'atefits ends. The tube parts shown and referred-to in the present instance forin the protective glass shield within which the tube prop'eris located, the light rays being ofcourseprojected from the nozzle end of the tubetoward the leftas 'shown in Figure A1. This end of the tubeis therefore inserted in the openingin collar Q lwiththe latter 7^ingripping engagement with the corresponding side jof the spherical enlargement 30. yA corresponding c-ollarl isplaced on the other end of tlietube in 'engagement Vwith the opposing surface or side ofthe spherical these collar'sQ Vand 3 1are formed with perforated bosses thruwwhich are passed tie; rods 32 for drawingthe parts together and clamping the tube therebetween so that the latter is vsecurely gripped and held. It is apparent from this construction that the tube and collars and 31 are rigidly assembled and that as collar 25 is slid- .ably adjustedin the frame 10013.20, the tube movementin its bearing. for.engagement` with a series of recesses 40 inI the flange 39 and it is 'appareiit thatA 'spindle` 34 may be rotated bynieans Aof a handl piece 41 to adjustably slide the tube along. thel'guideway and that with the parts so adjusted the spindie mayv be slidV longitudinally into locking engagement with one of the recesses 40 to lock the parts in an adjusted position, In the present instance there are three such recesses 40, one located centrally ofthe guideway and one on either side of the central position for making the ldifferent views referred to above. Collar preferably has fixed thereon a holding sleeve 42 in which is supported the usual adapter or nozzle 43.

The tube to which the invention is adapted in the present instance has an upwardly eX,- tending flange 44 in which the filament isv located. The filament and its connection being Vmore or" vless delicate metal or other rigid material covering the hood being clamped to the flange as by the adjacent vsupporting arm 16.

in construction1V there is "provided protective hood loof nieans of tying clips fixed at one end to the hood and at the other to the adjacent tie rods The pivotalvadjusting movement of the loop shaped frame 19 on the supporting arnis 16 is preferably limited as by means of a' stud 47 "on an end 18 of the frame which engages withopposing stop shoulders 48 on rlhe swinging movement of the frame on the supporting arin is'thus limited so that the tube cannot bels'wung far enough tocause its outer or radiator'end to 'which the high tension electrical connection is attached to approach dangerously near the supporting sections.

lt is to be noted that the end portions of the loopsliaped frame are carried yopposite the otlier collai 3l or substantially Vinto vertical alignment with the' center of gravityof the 4tube and `its attachments, .so that the tube tends to remain iii any position iii'which it is swungon the trunnions l17 assisted the slight friction of the connections. The location of the pivotal axis formed by trunnions 17 above the 4axis of the tube as shown in Figure 1 is also advantageousl as tending lto throw the outer high tension end of the tube farther fromI tliesupporting section 15 when thetube vis swung to'carry its outer endiipwarlly. r

it is apparent from `th'ie'abo've construction that the tube may be readily yadjusted along Vthe guide-ways 21 and also .easily swung by a light pressure of the hand about the trunnions and alsoabout the pivotal axes of the s ections14 and 15. The shape and arrangement of the various parte are such as to effectively enclose and protect to a large degree the f ragile'tube andits connections.. This isacconjiplished not only bythe forked arms 16 which embrace the tube but also the extension of the eiid'portions of frame'llfroin theirpivotal connections with .Mm-i5 .llGIig the Vsides of the megan@ by the encircling of the tube by the looped portion of the frame. The collars and with their tie bolts 32, and also the hood andclips 4 5 contribute tothe sainegiesult.

"In Figures to Sis shown a modified forni of coiistru ction for they loop shaped frame,

in which the frame, indicated at 49, has a substantiallyv rectangular looped portion 5() with unitary end portions 5 1 extended to envclosetheutube o n oppositesides. These'end portions are adapted for pivotal connection at their extremities 52with forked supportingarins such as indicatedat- 16in .the preferred embodiment. Inwthis case however, while `the pivotal points/are arranged to lfall opposite t lie center o fgravity of the tube,

they are no t raised vertically above the'saine asin Vthe preferredform.; The fram'e loop ...is formed at lts orpesf 'Sides Wtheuide- -ways 5 3 curvelonanarc as before'and provided with tracks on which slides a collar 54 loo lil

provided with openings for tie rods engaging with a similar collar between which and collar 54 the tube is clamped as previously described. A rack and pinion device is provided in this form also for sliding the tube in the frame loop.

The operation of the apparatus has been explained in connection with the description of its construction and it is apparent that the apparatus is simple and practical in character, affording an eiective means for gripping and supporting the light source, in a manner permitting easy adjustment of the latter in a variety of positions, while the disposition `of the pa-rts is such as to afford at the same time a large degree of protection for the fragile light source against injury by inadvertent blows or collisions in use.

We claim as our inventionl. A light projecting apparatus comprising a support, a loop-shaped frame adjustably carried by said support and provided at opposite sides thereof with arcuate guide means, a body including a source of light, a second frame supporting said body and slidable in said first frame on said guide means to diierent radial operating positions, a rack on one of said frames and an intermeshing pinion on the other, and means for rotating said pinion to adjust said second frame and light source.

2. A light projecting apparatus comprising a support, a frame adjustably carried by the support, a. body including a source of light, a second frame supporting said body and slidable on said iirst frame to different operating positions, `a rack on one of said frames and a rotatable and longitudinally slidable spindle on the other frame provided with a pinion meshing with said rack and with a portion slidable into locking engagement with recesses in the frame on which said raclr is carried. Y

3. A light projecting apparatus comprising a support, a frame adjustably carried by the support and comprising spaced opposite sides ormed with arcuate guideways, a body including a source of light, spaced parts adjustably connected withV each other for clamping engagement with opposed surfaces or' said body, one of said parts being slidably supported on said guideways for movement to different radial positions on said frame, a rack on one of said parts and means comprising a pinion on the frame meshing with the rack for moving said parts and body to different positions.

4. A light projecting apparatus comprising a support, a body including a source of light, spaced parts in clamping engagement with opposite surfaces of said body, and a frame having means adjacent its center for movably supporting one of said parts and said body and having its ends extended opposite the other of said parts and adjustably connected with said support.

5. A light projecting apparatus comprising a support, a body including a source oi light, a supporting part fixed to said body, and a frame having centrally thereot` an arcuate guide portion extending transversely of said body and slidably supporting said part and having end portions extended along opposite sides of said bodyto enclose and protect the same and pivotally connected with said support.

6. A light projecting apparatus comprising a support, a body including a source of light, a frame having a central loop portion encircling said body and having end portions extended along opposite sides of said body to enclose and protect the same, connections between said support and the ends of said frame movably supporting the latter, and cooperating means on said body and opposite sides of said frame loop portion for adjustably supporting said body.

7 In a light projecting apparatus, a body comprising a source of light, spaced supporting parts clamped to opposing surfaces ot said body, a frame having a central loop portion encircling said body with opposite sides provided with spaced guideways slidably supporting one of said parts, rack and pinion means for adjusting said part in the traine loop, end portions on said frame extending transversely of said loop portion along the sides of said body opposite the other of said parts, and a forked support having arms eX- tended on opposite. sides of said body and pivotallyconnected with the end portions of said frame.

OSCAR H. PIEPER. ALPHONSE F. PIEPER. 

